On behalf of the Trust, I hereby
transmit for filing pursuant to Rule 497 under the Securities Act of 1933, as amended (the 1933 Act), exhibits containing risk/return summary information in the eXtensible Business Reporting Language (XBRL) format that mirrors the
risk/return summary information contained in the Prospectus dated September 12, 2012 for the FlexShares® Ready
Access Variable Income Fund, a series of the Trust, as filed pursuant to Rule 497 under the 1933 Act on October 10, 2012 (0001193125-12-419880).

Questions and comments may be directed to the undersigned at (312) 569-1167.